Chadi Barakat

Research Director, Inria
Université Côte d’Azur

2004, route des lucioles
06902 Sophia Antipolis, France
Tel : +33 4 92 38 75 96
Fax : +33 4 92 38 79 78
Email : Chadi.Barakat 


I am Senior Researcher (Directeur de Recherche) in the DIANA project-team at Inria, research center of Université Côte d’Azur. The DIANA team is the successor of the PLANETE team. I got my Electrical and Electronics engineering degree from the Lebanese University of Beirut in 1997, and my Master, PhD and HDR degrees in Computer Science from the University of Nice Sophia Antipolis in 1998, 2001 and 2009, respectively. My PhD was done in the MISTRAL project-team at INRIA Sophia-Antipolis under the direction of Eitan Altman and my HDR treated a set of solutions for efficient Internet monitoring. From April 2001 to March 2002, I was with the LCA department at EPFL-Lausanne for a post-doctoral position (with a grant from Sprint Labs working in the group of Patrick Thiran), and from March to August 2004, I was a visiting faculty member at Intel Research Cambridge working in the group of Christophe Diot. My main research interests are in Internet measurement and traffic analysis, user quality of experience and network transparency, new network architectures (ICN and SDN), and performance evaluation of computer networks. I am senior member of the IEEE and the ACM.

What’s new?

  • The ACM Internet Measurement Conference (IMC’22) will be in Nice on Oct 25-27, 2022! The website is up and can be visited here. You can start saving these dates in your agenda. I hope the pandemic situation will allow to see you in large numbers on the French Riviera.
  • Congratulations to Tingting for her paper to appear in IEEE Transactions on Network Management, titled “Dynamic Controller Assignment in Software Defined Internet of Vehicles through Multi-Agent Deep Reinforcement Learning”. Good work Tingting et al. Click here for a copy.
  • Best paper award for our paper at CNSM 2020. Congratulations Othmane for this work and for the award! “From Encrypted Video Traces to Viewport Classification”. Click here for a copy. An extended version to appear in IEEE Transactions on Network Management.
  • ACQUA Android is now in the Play Store. It is still in experimental mode, but you  can already download it and enjoy the features it provides in terms of fine grained diagnosis of your Internet access and your quality of experience. Click here to get the code from the store.


(complete list, pdf, ps, or google scholar)


(postscript, pdf)

Research projects

  • ACQUA: Monitoring Internet access and Quality of User Experience.
    Supported by Inria ADT ACQUA, Inria IPL BetterNet and ANR BottleNet.
  • Geolocation assessment of mobile network performance, in collaboration with YDATA.
  • Unveiling the reality of quality of service from encrypted video traffic.
  • Quality of experience aware management of communication networks (bandwidth allocation, caching).
  • Monitoring of virtualized networks with application to reproducible network experimentation.

Past projects

  • Offloading mobile networks by content caching in vehicles.
    Collaboration with Eurecom supported by Labex UCN@SOPHIA.
  • ChkDiff: Checking Traffic Differentiation at Internet access.
    Collaboration with I3S supported by Labex UCN@SOPHIA.
  • Content-centric communications in mobile wireless networks.
    HBSD (point-to-point) and CEDO (interest-driven) are distributed and collaborative solutions for managing the resources of mobile nodes. MobiTrade is another solution for non-collaborative scenarios.
  • Adaptive traffic sampling. Supported by the FP7 ECODE project.
    Have a look at our platform MonLab for traffic emulation and NetFlow measurements.
  • Internet traffic classification and host profiling. Supported by the ANR CMON project.
  • BitHoc: Content sharing in mobile wireless networks. Supported by the ITEA Expeshare project.
  • Understanding the properties of the BitTorrent Overlay. Supported by the ANR OSCAR project.
  • Scalable solutions for data collection. Supported by Hitachi Europe. Visit TICP web page for more details.


Professional activities

(complete list)

  • Associate editor for the Elsevier Computer Networks journal (2012-present).
  • Member of the Conseil d’Orientation Scientifique et Technologique, working group on international affairs (COST-GTRI), at Inria (2011-present).
  • Scientific correspondent and referee for international affairs at Inria Sophia Antipolis (2011-present).
  • Member of the organizing committee for the Forum Numerica seminars of University Côte d’Azur (2018 – ).

Past activities

  • Workshop Co-Chair for ACM CoNEXT 2018, Greece.
  • General Co-Chair for ACM CoNEXT 2012, Nice.
  • Guest Editor for an IEEE JSAC special issue on Sampling the Internet: Techniques and Applications (2006).
  • Area Editor for ACM Computer Communication Review (2005 – 2010).
  • General Chair for WiOpt 2005 workshops (Riva Del Garda, Italy).
  • General Chair for PAM 2004 (Juan Les Pins, France).
  • Session chair at ACM IMC 2017 (London), ICCIT 2013 (Beirut), ACM IMC 2011 (Berlin), ACM IMC 2005 (Berkeley), WiOpt 2003 (Sophia Antipolis), ICNP 2002 (Paris).
  • Member of the recruitment committee at the computer science department of the University of Nice Sophia Antipolis (2005-2008), member of the directorial board for the Master RSD of the University of Nice Sophia Antipolis (2005-2008), and responsible of the internship program at the latter Master (2005-2008).

Teaching activities

(complete list)

  • Evolving Internet, 12 hours, Master IFI/Ubinet, University of Nice Sophia Antipolis, 2008-present.
  • Internet Measurement and New Architectures, 9 hours, Master IFI/Ubinet, University of Nice Sophia Antipolis, 2008-present.
  • Computer Networks, 12 hours, Master 1 in Computer Science, University of Nice Sophia Antipolis, 2018-present.
  • Internet of the Future, 12 hours, Master 1 in Computer Science, University of Nice Sophia Antipolis,
  • Voice over IP, 6 hours, Master ESTEL (ex-TSM), University of Nice Sophia Antipolis, 2007-present.

Past courses

  • Internet and Networks, 18 hours, Master 1 International in Computer Science, University of Nice Sophia Antipolis, 2013-present.
  • Internet Measurement and Traffic Analysis, (i) Networking and Distributed Systems Master at the University of Nice Sophia Antipolis, 15 hours, 2004-2007, (ii) Master RIM, ENSI, Tunis, 15 hours, 2003-2007, (iii) AIT Thailand, 15 hours, 2003 and 2005, (iv) Master Telecom ParisTech, 3 hours, 2009-2013, and (v) ETH, Zurich, 2 hours, 2009.
  • Wireless Networking, 7 hours, Master RISM (ex-RTM), IUP Avignon, 2009-2015.
  • Overview of Information Centric Networking, Master Telecom ParisTech, 3 hours, 2014.
  • Local area networks, 21 hours + 10 hours practical work, IUT of the University of Nice Sophia Antipolis, 2007-2013.
  • Ns-2, the Network Simulator, 7 hours, at the Networking and Distributed Systems DEA of the University of Nice Sophia Antipolis and at the Master RTM at IUP Avignon. The course is followed by practical exercises on the simulation of real scenarios (slides and exercises in English, slides in French).
  • Internet over Satellites, 6 hours, Networking and Distributed Systems DEA, University of Nice Sophia Antipolis, France, 2000 (slides).

Selected talks

  • Bridging the gap between network measurements and quality of experience: the video streaming case, Workshop on Systems, Inria Rennes, October 2021 (slides).
  • ACQUA : Applicationlevel Quality of Experience at Internet Access, Journées du Conseil Scientifique de l’Afnic, Paris, July 2015 (slides,video).
  • Content dissemination in mobile wireless networks, UCN@SOPHIA Info Day, Sophia Antipolis, February 2013 (slides).
  • On message drop and scheduling in Delay Tolerant Networks: Theory and practice, Ecole francophone CFIP, 2011 (slides).
  • Monitoring of Internet traffic and applications, ETH Zurich, 2009 (slides).
  • Issues related to the modeling of the TCP protocol, E-next school, Louvain, November 2005 (slides).
  • Scalable solutions for information collection, KTH, Stockholm, September 2005 (slides).
  • On TCP performance in heterogeneous networks, Summer Research Institute, Lausanne, July 2002 (slides).

PhD students

  • Bernard Tamba Sandouno. Co-supervised with Thierry Turletti. Started in May 2021. Funded by ANRT CIFRE. Thesis title: Geolocation assessment model of mobile network performance.
  • Houssam ElBouanani. Co-supervised with Walid Dabbous. Started in December 2019. Funded by H2020 Fed4Fire+. Thesis title: Experiment control for reproducible research.
  • Othmane Belmoukadam. Graduated in September 2021. Funded by the University of Nice Sophia Antipolis and the University Côte d’Azur. Thesis title: QoE aware content management in the Internet: caching and transport (Dissertation).
  • Imane Taibi. Co-supervised with Gerardo Rubino and Yassine Hadjadj-Aoul. Started in November 2017. Funded by Inria Project Lab BetterNet. Thesis title: Big data analysis for network monitoring and troubleshooting.
  • Karyna Gogunska. Co-supervised with Guillaume Urvoy-Keller. Graduated in December 2019. Funded by the UCN@SOPHIA Labex. Thesis title: On the Cost of Measurements in Virtualized Networks (Dissertation).
  • Jawad Khokhar. Graduated in October 2019. Funded by ANR BottleNet. Thesis title: Modeling QoE of Internet Applications by Controlled Experimentation and Machine Learning (Dissertation).
  • Luigi Vigneri. Co-supervised with Thrasyvoulos Spyropoulos. Graduated in July 2017. Funded by the UCN@SOPHIA Labex. Thesis title: Vehicles as a Mobile Cloud: Leveraging mobility for content storage and dissemination (Dissertation).
  • Riccardo Ravaioli. Co-supervised with Guillaume Urvoy-Keller. Graduated in July 2016. Funded by the UCN@SOPHIA Labex. Thesis title: Active Inference of Network Neutrality (Dissertation).
  • Amir Krifa. Graduated in April 2012. Thesis title: Towards better content dissemination applications for Disruption Tolerant Networks (Dissertation).
  • Imed Lassoued. Graduated in December 2011. Funded by the ECODE FP7 project. Thesis title: Adaptive Monitoring and Management of Internet Traffic (Dissertation).
  • Karim Sbaï. Co-supervised with Walid Dabbous. Graduated in October 2010. Funded by the ITEA Expeshare project. Thesis title: Architecture for data sharing in mobile wireless networks (Dissertation).
  • Mohamad Jaber. Co-supervised with Philippe Nain. Graduated in October 2011. Funded by the French ministry and supported by the CMON ANR project. Thesis title: Internet traffic profiling and identification (Dissertation).
  • Mohammad Malli. Co-supervised with Walid Dabbous. Graduated in September 2006. Thesis title: Revisiting Internet Topology: Application-Centric Approach (Dissertation).
  • Victor Ramos. Co-supervised with Eitan Altman. Graduated in December 2004. Thesis title: Reliable and robust transmission of multimedia contents over the Internet (Dissertation).

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